Dental bridge-work



(No Model.)

E. B. CALL. DENTAL BRIDGE WORK.

No. 445,309. Patented Jen. 27, 1891.

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iiiivtTEn STATES PATENT OFFICE.

EDWARD n. cALL, or TEORIA, ILLiNoIs.

DENTAL BRIDGE-WORK.

SPECIFICATION forming part of Letters Patent No. 445,309, dated January 27, 1891.

Application tiled January 24, 1890. Serial No. 337,971. (No model.)

To all whom t may concern.:

Be it known that I, EDWARD B. CALL, a citi- Zen ot the United States, residing at Peoria, in the countyot' Peoria and State of Illinois, have invented certain new and useful Improvements in Dental Bridge-\Vol'k; and Ido hereby declare the following to be a full, clear, and exact description ot' the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improved methods in the art oi;l dentistry, as well as to improved devices for use in that art.

I refer to the accompanying drawings, and by their aid will describe my invention.

Figure l shows a longitudinal section of an artificial tooth having holes pierced through it from the palatal to the labial sides. The holes are countersunk on the labial side, as shown at A A. Fig. 2 is a cross-section of a lube B, having a screw-thread cut upon its interior surface, and also showing the crosssection ot a bolt-having a screw-thread fitting the interior of said tube. This tube, as well as the belt, is provided with a head, which for convenience I make square, and also having a shoulder under the head shown at B B', and designed to fit the countersink in the tooth before mentioned. The bolt is shown in this figure at @,Fig. 2. Iiig. 3 is a bridge, as that term is used in the dental art.

I) I) are natural teeth.

l is a plate, preferably ot' metal, rigidly atlaehed tothe natural teeth, as shown.

lil E are artificial teeth attached to said plate in the ordinary Way.

D shows a part of the plate F, from which an artificial tooth has been broken oit. G is an artificial tooth attached to said plate by means ot' my device. The bolt is shown smooth upon the outside, having the appearance of a filling.

My device is adapted especially for repairing bridge-work, as has been described. It may be used, however, in any place where it is designed to replace an artificial tooth casually broken from either a plate or a bridge or pivot, and obviates the necessity of injuring such plate or destroying the bridge when attached permanently to the teeth, and the operation may be performed without pain to the patient.

I describe the use of my invention as follows: There it is designed to supply an artieial tooth broken from a bridge, as shown and described, I make an artificial tooth of any ordinary material, preferably of plastic material vitrified by tire. Through this I pierce one or more holes, as shown at Fig. l. This tooth I fit to its place upon the bridge, then drill holes through the plate corresponding to the holes in the tooth. Through these holes, extending from the palatal side of the plate to the labial side of the tooth, I insert the bolt, or preferably the tube shown at Fig. 2, with its bolt as shown. at C, Fig. 2, and by means of the screw draw the tooth closely to the plate. I then cut ott the head of the bolt leaving the shoulder in the couutersi n k which I polish and finish as an ordinary filling. This same process may be observed in a reattachment or replacing a tooth broken from a removable plate.

Instead of the tube with its interior screw and bolt fitted therein, I have in some cases made use of a simple bolt having au ordinary nut thereon; but I regard the tube as preferable in all cases where I have been called to use it.

Having thus described my invention, what I claim as mine, and desire to secure by Letters Patent, is-

For replacing artificial teeth either upon bridge-plate or pivot-work, an artificial tooth having one or more holes pierced through it from the palatal to the labial side, countersunk on the labial side, held in place by a tube fitted with a screw upon its interior surface, and having a bolt fitted to screwinto the said tube, all acting together in the manner and for the purpose specitied.

In testimony whereof I a'fiix my signature in presence of two witnesses.

Il. W. WELLs, A. KEITHLEY. 

